Questionnaire: The questionnaire consists of open-ended questions to be administered to participants. The questionnaire items were composed by reviewing related studies. Two versions of the questionnaire will be administered, one for participants with a history of participation in clinical trials and one for participants who were approached but have never been in a clinical trial (See Appendix 1.) The questionnaire will be revised after pre-testing to incorporate changes before it will be administered to all 48 participants.